Plaster-ceiling support.



A. '13. winmix.

. PLASYEE CELLLMG SUPPORT.` f APPLICATION mtu Mov. sa. 191e.

1,251,151. Patented Dw.25,1917

f ff

. UNTTED STATES PATENT Acierren.,

ARTHUR J". WIDMER, OF WEBSTER GROVES, MISSOURI. ASSIGNOR, BY MESNE ASSIGN- MENTS, TO WIDMER ENGINEERING COMPANY, F ST. LOUIS, MISSOURI, A CORPO- RATION OF MISSOURI.

PLASTER-CEIIING SUPPORT.

specification of Letters Patent.

Application ileid November 13, 1916. .y Serial No. 131,916.

To all whom it may concern.'

Be it known that, I, ARTHUR J. lVIDMnn, a citizen of the United States, and a resident of. lVebster Grroves,y in the county of St.

ALouis and State of Missouri have invented a new and useful Improvement in Plaster- Ceiling Supports, of which the following is a specification'.

This invent-ion relates to supporting plaster ceilings from ribbed concrete floors, and particularly to ceilings having a ground consisting of plaster boards. The invention is applicable also to supporting ceilings having' metal lath or other ground\for the plaster` andto supporting sheet nietal ceilings.

The invention consists in an improved form of sheet, metal anchor strip embedded in the concrete and provided with integral tongues projecting down through the ceiling boards or metal lath for supportingl the ceiling. The invention also consists i1 the iniproved form of supporting plates for th'e parts in the several views.

Figure 1 is. a side elevation of the improved anchor strip. showing it in place. on

Fig. 5 iS a bottom plan view of-the fin` ished tioor prior to plastering the ceiling, p arts of the plaster boaidsbeing removed to disclose the rib;

Fig. 6 is a'bottom view of a plaster board supporting plate;

Fig. 7 is a side elevation of an anchor strip ready for placing on the forms;

Fig. 8 is a plan view of the anchor strip; and

Fig. 9 is a fragmentary view similar to Fig. 3 showing a modified form of anchor strip. l

Reinforced concrete floors having strengthening ribs on their under sides are commonly molded .in place in temporary forms or centering, the ribs and floor slab being poured simultaneously, and lafter the concrete has hardened sufficiently for the floor to be selfsupporting, the forms are removed and the ceiling is applied from below. lleretofore, ties have been embedded in they ribs with their lowerv @nds dependingbelow the concrete to support the ceiling. but this method of construction requires special provision to be made in the forms for the ties. Moreover, where separate ties are used, care must be taken to space them properly and to secure them well against accidental displacement -during the placing of the reinforcing bars and concrete in the ribs. l

The ceiling supports 11 shown in the draw- 'lg'sal'e continuONS strips of metal. which are nailed or tacked to the forms 1'2- in the middle of each rib space prior to placing the materials which compose the ribs 13.

In the forms of construction illustrated in Figs. 1 to 8. inclusive7 the ceiling support ll consists of a strip of metal which has tongues 14 an inch or more in length Struck down from its middle portion at equal distances apart. The intervals between the tongues may be six' to eight inches in lengt-h, and are slitted longitudinally to form three strips. The middle strip 15 is struck up to form an inverted V-shaped anchor for embedding in the concrete of the rib 13. This operation shortens the strip 11, and the side strips 1G are folded under the unsllitted portion of the strip to take upthenl surplusV length, as shown in Fig. 7. Instead 0f the folds 17 formed by the surplus length of the side strips being laid under the unslitted `portion of the strip, they may be made at the middle of the side strips and laid back on themselves, as shown in Fig. 9. This construction malies the strip 11 rigid enough to be handled without losing its shape.

Patented Dec. 25. 1917.

After the forms 12 are removed, the

tongues la are bent down, and the plaster boards 18, or other suitable ground tor the plaster, are placed across the ribs 13 spanning the spaces between the tongues. Narrow spaces are lett betwen the plaster boards for the tongues to project down through, and plates 19 are arranged across these spaces and secured to the tongues to hold up the plaster boards. The plates l!) have holes 20 through which the ends of the tongues 'lit pass, and ribs Q1 for stitteningthem. A thick coat of plaster 2Q is applied to the lower surface otl the plaster' boards, co vering iip the plates and tongues, and filling` the spaces between the plaster boards.

1n the construction shown in Fig. 9, the anchor strip ll has two tongues Q3 between each anchor portion l5 for bending under the plates 19 at both edges, instead of a single tongue for each plate.

From the description and drawings it is evident that no special provision need be made in the forms for the anchor strips, and that no special form or arrangement ot reinforcement is required t'or use with the anchor strips. to the precise shapes and arrangements of the anchor strips and plates shown and described.

. l claim the following as my invention:

l. floor construction comprising concrete ribs. continuous strips of sheet metal narrower than said ribs and embedded in the middle region ot said ribs, portions ot said strips being slitted and bent up in undulations extending into said ribs, and por tionsI being slitted to form tongues projecting below the lower edges ot said ribs, and ceiling boards spanning beneath said ribs and supported bv said tongues.

A supporting device it'or the ceiling ot a concrete floor, said device ooinprising` a continuous strip of' sheet; metal ol' undulating' lorni embedded in the under side of the tloor. portions ol said strip being slitled and bent to project up into they concrete. other portions oiI `aid strip being slitted and bent to l'orin downwardly extending longues which project below the floor, and inetal The invention is not restricted plates supported on said tongues and on which the ceiling rests.

3. A4 continuous anchor strip for embedding in a concrete floor for supporting a ceiling inadc of plastic material, saidvanchor strip comprising a series of tongues, and slit portions intervening between said tongues, said slit portions being sepa-rated and one part bent out of the plane o! the strip on the side opposite said tongues to torni loops for embedding in the concrete.

4. A continuous anchor strip for embedding in a concrete floor for supporting a ceiling made of plastic material, said anchor strip comprising a series of tongues, and slit portions intervening between said tongues, said slit portions bein separated and one part bent out ot the p ane' ot' the strip on the side opposite said tongues to form loops for embedding in the concrete, theI surplus metal of the remaining slit portions bcing folded back into the plane of the strip.

5. A continuous anchor strip for embedding in a concrete, floor for supporting a ceiling made ot plastic material, said anchor strip comprising a series ot tongues, and slit portions intervening between said tongues, said slit portions being separated and one part bent out of the plane ot the strip on the, side opposite said tongues to torni loopsl for embedding in thel concrete, the remaining slit portions being crimped to reduce their length toeorrespond to. the reduction in length resulting from bending said bent portions out ot the plane of the strip, said crimped portions being,r -folded tlat against the plane ot' said strip.

6, A metal supporting plate for plaster board ceilings, said plate having a longitudinal rib across ils middle` and a holo in the apex of said rib at' the middle of the plate 'adapted to receive a supporting tongue.

whereby Isaid tongue may bel readily centered in said slit and bent at anacute angle to center and support said plate.

lS'igned at St. Louis, Missouri, this ninth dav4 ol V;\'oveinber, 1916.

ARTH UR J. VVDMICR. 

